VORTEX PRESSURE STAGE OF TURBO-DRILL TURBINE Russian patent published in 2004 - IPC

FIELD: drilling.

SUBSTANCE: vortex pressure turbine stage comprises of the hub of the stator. The blade rim of the stator is fitted into the hub. The blades of the stator blade rim has a chord of the blade profiles which is inclined to the plane perpendicular to the longitudinal axis of the pressure turbine stage under an angle which does not exceed 50^o. The stator rode and rim receive the rotor pressure turbine stage which has the hub. The blade rim is mounted on the hub by a pressed fit. The inclination of the blades of the rotor rim ranges from 40 to 80^o. The outer side of the blades is concave.

EFFECT: enhanced efficiency.

6 dwg